Everett g



E. G GIBSON. Cloth-Stamping Machine.

Patented Jan. 6,1880.

N.PETERS, PHOTO-LITHOGRAFHER, WASHINGTON. D c.

v UNITED STATES. ATENT OFFICE.

EVERETT G. GIBSON, OF LOWELL, MASSACHUSETTS, ASSIGNOR TO LOWELL MACHINE SHOP, OF SAME PLACE.

CLOTH-STAM PING MACHINE.

SPECIFICATION forming part of Letters Patent No. 223,223, dated January 6, 1880. Application filed October 9, 1879.

To all whom it may concern: on the peripheries of two cams, F F, which Be it known that I, EVERETT G. GIBSON, are alike in shape. One of such cams is of Lowell, of the county of Middlesex and shown in side view in Fig. 6. These cams State of Massachusetts, have invented anew are fixed on a driving-shaft, G, which also and useful or Improved Machine for Stampcarries two other cams, H I, the latter of ing or Printing Trade-Marks or various other which is a grooved cam, and is shown in side prints upon pieces of cloth; and I do hereby view in Fig. 7. The said cam I receives in declare the same to be described in the folits groove a friction-roller arranged on a stud lowing specification, and represented in the projecting from the side of a slotted connec- 10 accompanying drawings, of whichtion-bar, k, which rests and slides on the driv- Figure 1 is a top View, Fig. 2 a front eleing-shaft, and is pivoted toan arm, I, extendvation, Fig. 3 a rear elevation, Fig. 4 an end in g up from a rock-shaft, m. On the said rockview, and Fig. 5 a transverse section, of it. shaft there are fixed two slotted arms, a n,

In some respects this machine is like that into the slots of which studs 3 from the car- 1 5 represented and described in the United States riage D project.

Patent No. 21,716, granted in 1858 to Alger- From the above and what is hereinafter demon S. Wrightt-hat is to say, like the mascribed it will be seen that, on the drivingchine so patented, my improved one has not shaft being revolved, not only will the carriage only a reciprocating carriage or table for supbe moved back from over the ink-trough, but

20 porting the piece of goods to be stamped, but the stamp will be allowed to move, and will mechanism for operating the stamp for stampmove downward into such trough to be inked. ing the said piece and, furthermore, it has The stamp will next rise a short distance upmechanism or devices for inking the stamp or ward and again be depressed to receive a sec applying color thereto. 0nd coating of color or ink, after which the 25 My improvement or invention relates spestamp will be raised upward, in order for the cially to mechanism for operating the stamp, carriage (which in themeantime is to be supfor properly coloring or inking it, and for imposed to have had a piece of goods placed on parting to it its necessary movements and init) to he returned again to its place over the tervals of rest, all of which is hereinafter detrough. This having taken place the stamp 30 scribed. will move down and rest on the piece to be In the drawings,A denotes the frame of stamped, immediately after which the self-adthe machine, in which, arranged as shown, is justing pressure mechanism, to be hereinafter a color trough or cistern, B, which may or may described, will be put in operation to press the not be provided with an endless coloring or stamp down upon the piece with force suffi- 3 5 inking apron of the usual kinds. Besides the cient to complete the imprint. said ink-trough the frame A supports a mov- After the stamp may have thus printed the able bed or carriage, D, by means of horizonpiece, such stamp will rise off the piece, and tal and parallel ways a a, upon which the the carriage will be moved backward from un- Wheels of said carriage rest, in order for it to derneath the stamp to have the piece removed 0 be moved both over the inking-trough and and afresh piece substituted. 0 away from over it. Directly above the said On the middle of the barb there rests, at its trough is the stamp E, which, by means of an lowerend,avertical slide-rack, K, so supported arched spring, 0, is connected to a horizontal by and adapted to the frame A as to be capabar, I), from which two slide-rods, c c, extend ble of readily moving vertically therein. This 5 upward vertically through supports (1 d, and toothed rack engages with a gear, L, fixed on 5 are connected to arms 6 e, projecting, as shown, a tubular shaft, 0, which is supported by and from the upper parts of two other vertical turns freely on a stationary shaft, p, arranged slide-rods, ff. These latter rods extend upas shown. There is fixed to the shaft 0 a ward from a horizontal bow or arch, g, in ratchet-Wheel, q, and there also turns on the 50 which are two friction-rollers, h k, that bear shaft p a double furcated arm, 9", to which is I00 on an upright sliderod, z,

pivoted a pawl, s, to work with the said ratchet-wheel q.

From the hub t of the pawl two studs, a v, project, in manner as shown in Fig. 8, which is a vertical section. taken through them, and an elastic arm, to, extends between them from the shaftp. The lower set of prongs of the arm 1* are slotted lengthwise to receive studs 90 00', projecting from a block, y, that is fastened which, arranged as shown in the frame A, has at its foot a frictionroller, a, to rest on the periphery of the cam H. By means of the said cam H the rod 2 is forced upward and caused to elevate the arm 1, they being subsequent-1y allowed by the cam to be moved contrariwise by their weight. On the latter movement taking placethe pawl, by its upper stud being borne down upon the arm 10, will be tripped or thrown out of engagement with the ratchet-wheel, whereby the rack will be free to fall down and rest on the bar I), so as to adjust itself to the bar, as the thickness of the piece of cloth to be stamped may determine the altitude of such bar when the stamp may be resting on the cloth after the stamp may have been inked, as described, and moved down upon the cloth. On the furcated arm 1" being forced upward the lower stud of the pawl will be borne against the elastic arm w, and as a consequence the pawl will be tripped back into engagement with theratchet, an d, continuingto move, will turn it, and thereby cause the rack to be forced down upon the barb with the necessary pressure for the stamp to complete an imprint on the cloth. Thus, by releasing the pawl from the ratchet at the proper time, it will be seen that the pressurerack can drop down on the bar I), and thereby adjust themechanism thereto for pressing it down, whatever may be the thickness of the piece of cloth on which the stamp may be resting. As pieces to be stamped usually vary more or less in thickness, such adjustment becomes necessary to insure good printing of them.

Each of the cams F has at its middle the auxiliary cam or angular projection d, formed as shown, its purpose being to cause the stamp, immediately after receiving a coating of ink, to rise from the inking device and to again descend and take or receive from it another to operate coating of ink, thereby insuring the stamp being thoroughly inked.

The cams F H I are formed with certain portions of their bearingsurfaces concentric with the axes of such cams, in order to effect the necessary intervals of rest of the stamp and the carriage.

1n the above-described machine I claim as my invention as follows, viz:

1. In combination with the stamp and the drivingshaft, the adjustable pressure mechanism, it consisting of the slide-rack K, pinion L, tubular shaft 0, ratchet-wheel q, stationary shaft 19, pawl 8, double furcated arm 4", pawl-tripping studs a '0, elastic arm to, sliderod 2, and the cam H, all arranged and adapted substantially as set forth.

2. The combination of the aforesaid adjust able pressure mechanism, consisting of the slide-rack K, pinion L, tubular shaft 0, ratchetwheel q, stationary shaft 19, pawl 8, double fnrcated arm 4", pawl-tripping studs a t, elastic arm 10, slide-rod z, and the cam H with the stamp E, the ink-trough B, the carriage D, and the mechanism for imparting to the said carriage and stamp their intermittent reciprocating movements to effect inking of the stamp and the carrying under and out therefrom of a piece of goods to be printed or stamped, the mechanism for so operating the carriage being the studs 8 s, slotted arms 1m, shaft on, arm l, slotted connecting-bar k, and its operative grooved cam 1, and the mechanism for so moving the stamp being the sliderods 0 0 f f, oams F F, and connect-ionbars b e 0, all being adapted and arranged substantially as and to operate as set forth.

3. The combination of the cams F F, provided with the angular projections or auxiliary cams d d, with the slide-rods 0 off, connection-bars e e, and the stamp, all being to operate the said stamp relatively to the inking device or trough, and so as to cause two layers of ink to be imparted to the stamp preparatory to each impression orimprint being made by it, as specified.

EVERETT G. GIBSON.

Witnesses R. H. EDDY, W. W. LUNT. 

